# Service bulletin PIP5826B

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10206744
- Published by NHTSA: 2022\-01\-24
- Manufacturer's number: PIP5826B
- Manufacturer's date: 2021\-12\-22
- NHTSA component: ENGINE; ELECTRICAL SYSTEM:WIRING

## NHTSA's summary

This Preliminary information communicates to the dealers information related to isolating a potential engine wiring harness issue causing a MIL on with P0521.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10206744-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10206744-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine, Wiring and fuses

## Trouble codes named

P0521

## Vehicles listed

- 2020 to 2021 BUICK ENCORE GX
- 2020 CHEVROLET TRAILBLAZER
- 2021 CHEVROLET TRAILBLAZER

## Other bulletins for the same vehicles and component

- [22\-NA\-008](/bulletins/10232154.md), 2023-03-01, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM. This bulletin provides a procedure to locate a possible short in the wiring harness near the MAF sensor.
- [22\-NA\-008](/bulletins/10225716.md), 2022-11-03, Service bulletin: ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM. This bulletin provides a procedure to locate a possible short in the wiring harness near the MAF sensor.
- [22\-NA\-008](/bulletins/10213501.md), 2022-06-06, Service bulletin: ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING:CRITICAL FASTENERS; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This bulletin provides a procedure to locate a possible short in the wiring harness near the MAF sensor.

JSON: [/v1/bulletins/10206744](/v1/bulletins/10206744)

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